Method and apparatus for delivering closures from a magazine



M. WINTERHALTER METHOD AND APPARATUS FOR DELI'IERING CLOSURES FROM A MIEGIKZINE 4 Shoe sneet 1 Filed Oct. 26, 1929 In U'nt0r:- Martin Winttrhalttr Nov. 27, 1934- M. WINTERHALTER 2 9 METHOD AND APPARATUS FOR DELIVERING CLOSURES FROM A MAGAZINE Filed Oct. 26, 1929 4 Sheets-Sheet 2 Inventor:- Ma 2'6 in Win ta rhalt. an

Nov. 27, 1934. M. WINTERHALTER 1,982,090

METHOD AND APPARATUS FOR DELIVERING CLCSURES FROM A MAGAZINE Filed Oct. 26, 1929 4 Sheets-Sheet s Fig. 3.

Ina-ember:-

Nov. 27, 1934.

M. WINTERHALTER fYETHOD AND APPARATUS FOR DELIVERING CLOSURES FROM A MAGAZINE 4 Sheets-Sheet 4 Filed Oct. 26, 1929 Patented Nov. 27, 1934 METHOD AND APPARATUS FOR DELIVERING GLOSURES FROM A MAGAZINE Martin Winter-halter, Barmen-Wichlinghausem.

- Germany Application October 26,

1929, Serial No. 402,778

.In Germany October 31, 1928 25 Claims.

In providing separable fasteners on zipper closuresthe method has heretofore been either to make the separable fasteners in a machine and place the finished. fasteners on their supports, that is, a stringer or the like, or to make the separable fasteners separately and positioning them by means of comb-like patterns, in a separate operation. The patterns serve to maintain the necessary spacing of the fasteners. The latter were hitherto inserted by hand in the comb interstices of the patterns, these latter serving at the same time to support the stringer orthe like. The invention has solved the problem of improving the operation'of the latter named'type,

wherein manual labor is excluded as far as possible and as much time saved as possible in mounting the separable fasteners. According to the invention this problem is solved in that the separable fasteners are prepared in readiness in an intermediate member for being removed in rows simultaneously to be mounted on the support at the necessary relative distance apart. The intermediate member thus embodies a mechanical means by which manual labor is dispensed with insofar as much larger quantities.

of separable fasteners are prepared ready for further treatment at the necessary spacing apart. The transfer to the support itself or the further treatment can be carried out mechanically or manually. j

According to the invention, by way of example, such intermediate' member may be I formed of shaft-like collecting receptacles, which are set up in'rows for'the spacing of the separable fasteners and fed from .a reservoir. The guide or pattern in this case are comblike patterns, in the interstices of which the separable fasteners are placed, and which serves at the same time as asupport for the stringer or strip. The individual collecting receptacles are accordingly arranged to correspond to the pattern interstices. t

In the drawings there is represented by way of. example a device serving to carry out the process. I

Fig. 1 shows an elevational view of one half of the machine, the other half being identical,

Fig. 2 is a plan view from below,

Fig. 3 is aside view with partial section,

Figs. 4 and 5 are cross sections'through the lower part of the collecting shaft showing the parts in two different positions,the section of the comb 37 in Fig. 4 being taken through the teeth of the comb and in Fig. 5 through the interstices 38 between the teeth of the comb.

Figs. 6 and 7 show two individual parts inplan view.

Fig. 8 is a cross section similar to Figs. 4 and 5 showing the parts in a third position, the section of the comb 37 being taken through the interstices 38 as in Fig. 5, and v V Fig. 9 is an enlarged cross section of the stringer supporting parts, the section through the comb member 37 at the left side of the stringer 42 being taken through an interstice. 38 while the section through the comb member 37 at the right 'side of said stringer is taken between interstices and is accordingly through a 7 tooth of said comb member.

Figs. 1 and 2 simply show one half -of the device, the. other half having to be thought of as symmetrical thereto. The data for the one half consequently applies to the other half.

1 represents two standards standing vertically, with bottom brackets 2 which lead obliquely outwardly to the now undrawn carrier of the whole device. The two standards 1 have between them a series of vertical pockets 3.which' are formed by means of alternating thick and thin sheets of metal 4 and 4', placed one between the other. These pockets serve thepurpose of taking up the separable fasteners in layers of one upon the other in such manner that the fasteners run one upon the other with their arms which serve for'fastening purposes upon the base. The heavy metal sheets 4, as can be'seen from Fig. 2, are only separated a slight distance from each other at the front side while the light metal sheets 4' are placed toward the rear slightly so that in this manner the pockets 3 are formed to accommodate in spaced relation stacks of fastener elements of wellknown type such as shown, for example, in Sundback Patent 1,219,881 or Schachat Patent 1,731,638 with spaced apart jaws atone end and lateral projections at their other ends, the spacing between the inneredges of theopposedplates 4 providing a channel at the side of each pocket 3 to accommodate said, laterally extending projections with which fastener elements. of this character are usually provided.

At the lower endthe pockets 3 are capable 5 of being closed by means of movable pins 5 which can make their way into the pocket space. For this purpose the metal sheets 4, as can be seen from Figs. 4 and 5, are cut off right above the locking pin 5. The pins 5 are each fastened on 110 to a rail 6 which, in order to shut and open the pockets 3, can be moved toward and from each other. The rails 6 lie upon a pair of other lineal-shaped rails 7, which are moved in unison with the first. Fig. 4 shows the shutting position and Fig. 5 the open position of the rails 6 and 7 and of thelocking pins 5. Rails 7 are bevelled down on the inner sides which face each other, so that there result blade-like parts 8 which serve the purpose of supporting the arms of the separable fasteners.

There are attached fast to the rails 6 the pins 8' which extend into corresponding holes upon the rails 7 and by means of which the two rails are coupled in the horizontal direction.

The rails 6 are set upon the standards 1 by means of the brackets 9, which are fastened to the standards 1 and possess slotted guides 10 into which angle pieces 11 can slide, on the outer arms 12 of which the rails 6 are fastened by means of the screws 13.,

For. the mutual reinforcement of the positions of rails 6 and 7 there are used additional screwsprings 14 and 15, which catch at the outer ends of the rails 6 and 7 and tend to move the rails toward each other. For the contrary movement of the rails 7 there is further attached upon one of the same, at the outer end, an arm 16, which moves along in a suitable casing. 17 which corresponds and which is attached upon the opposite rail. v

On the outer face of each standard 1 there are two bearing members set one above the other, 18 and 19, in which a spindle 20 is set so as to be rotatable and so as-to be movable longitudinally. A screw spring 21, which sets itself with one end against the bearing 18 and with its other end against a fixed ring 22 which is fastened upon the spindle 20, keeps the spindle normally in the highest position. The spindle carries on its upper end a fork 23, which is firmly connected with the spindle and therefore takes part in its rotation and sidewise movement. The

\ fork serves as bearing for an arm 24, which carthereof but in a contrary direction. The axle 30 is rotatably and reciprocally mounted in brackets 31, which terminate in bearings 32 and are fastened to the standards 1. The axle 30 thus forms the point of rotation or pivot for the arm 24, which works as a single-armed lever. Upon the axle 30 there are fastened stopper rings 33, in order to restrict the horizontal movement of the axle 30. In this movement the arms 24 serve'simply as counter-guides, and the above described lever action occurs only with the vertical movement of the spindle 20. In the counter-guide action the spindles 20 act asthe turning axle for the arms 24.

On the lower end of the spindles 20 there is set fast upon each a cam 34, which carries on its lower end a part which carries the flanges 35. Between the flanges 35 the rail 17 is positioned which is thus forced to take part in the axial movement ofthe spindles 20. The rail 6 At its other end in view of the springs 14 and 15, with a locking force against the guideblock 34. When the rotation of the spindles 20 occurs, therefore, as soon as the cam takes up the position shown in Fig. 2,

the rails 6 and 7 are separated from each other and take up the position of Fig. 5. But if, on the other hand, the handle 27 is moved in the direction of the arrow (Fig. 2), the cam 34 moves into the oblique position and the rails 6 and 7 are moved one upon the other by the springs 14 and 15 until they take up the position shown in Fig. 4.

On each standard 1 there is fastened below the pockets 3 a guide 36, upon which the combs 37 may be caused to slide'vertically, which serve the purpose of taking up the stringers for. the separable fasteners, say, for example, cloth ribrons, etc. The separable fasteners thereby make their way into the comb slots 38. The vertical movement of the comb pieces 37 follows, for example, by means of a driving rod 39, which is moved in any way that will answer the purpose.

The modus operandi of the device is as follows:

The pockets 3 are kept filled with separable fasteners by means 'of a special distributing device, which fasteners, in the manner described, are placed one upon the other. The pockets are at first closed by the locking pins 5. After the comb piece 37 which has had a stringer positioned thereon from any suitable place is moved vertically upward so that it takes its place directly under the rail 7, the rails 6 and 7 are moved out of the position of Fig. 4 into that of Fig. 5 by a suitable movement of the handgrip 27. In consequence the pockets are opened up and out of each pocket a separable fastener can move downwards upon the stringer of cloth. Then the handgrip 27 is moved back into the locked position so thatthe falling out of additional fasteners is prevented. At the same time the released separable fasteners are seized by the points 8 of the rails 7 and are pressed from .on top down upon the stringer by means of a corresponding movement of the handgrip 27 and bythe concomitant vertical movement of the spindles 20; so that they rest upon the stringer with sufficient force for further operations. The further operations are carried out in the customary way. The handgrip 27 is then moved upwards again, that is, back into the starting position, and the process starts all over again from the beginning.

As is obvious from the various figures and in particular from Figures 4 and 5, the two rails 6 and 7 are positioned one above the other. Both rails are moved by means of the cam 34 as above described.v The final positions taken by the two rails are shown in Figures 4 and 5. The cam ,upon turning willmove these rails towards each other as shown in Figure 4, or away from each when the cam- 34 is moved downwardly by the spindle 20 and, will 'carryit upwardly when the spindle 20 is moved upwardly. I The separable fasteners40, with their attach ing arms downwardly directed, are superposed.

in layers in the shaft 3-which is formed by the plates 4 and 4. At the lower end the shafts 3 are closable by movable pins 5, which can enter into the shaft from the side.

Arranged below the two pairs of rails or bars 6 and '7, and centrally below the shafts 3, are the comb members 3'7 which are retained in their position by the jaws 41. The members 37 terminate above in the comb proper, in the interstices 38 of which the locking members can engage. The comb members hold between them the support 42 formed in the usual manner of bands or strips and the upper edge 43 of which is reinforced. The separable fasteners with their arms are attached to this upper edge by the arms being pressed laterally against the reinforcement 43 and clamped around it.

In Fig. 1, the comb member which holds the stringer or supporting strip 42 is in its lower position. The parts are first moved upwardly by the drive rod 39 into the position of Figs. 4, 5 and 8. The bars 6 and 7 thereby have the inner position according to Fig. 4. If these bars are moved rapidly back and forth into the position of Fig. 5 and then again into that of Fig. 4, the lowermost fastener 40 drops out of each of the adjacent engaging shafts 3, in the direction of the arrow in Fig. 5, on the reinforcement 43. On the coming together of the bars in the original position of Fig. 4, there is thus a fastener below these bars on the reinforcement 43. As a result of the comb interstices 38 and the rigid walls connected therewith, as shown by the section on Fig. 4, the strip 42 and its upper reinforcement 43 is held so strongly that the reinforcement 43 can not escape laterally from the interstices. Consequently, on the following downward movement of the pair of bars 7, that is, on descent of the handle 27, the small part 40 is pressed down so rigidly (Fig. 8) that it has sufficient retention on strip 42 before the final lateral pressing of the attaching arms. Bars 7 then return to the position of Fig. 4 and, after changing the strip 42, a new strip can be filled.

Fig. 9, on enlarged scale, shows the comb member 37 with the corresponding jaws 41 and the support 42 as well as its upper reinforcement. At the upper end of member 37, at the left, a tooth is cut away to show the interstice 38.

I claim:

1. Apparatus for conducting locking members of break locks to the strip-shaped carrying member comprising a collecting container, two pairs of rails positioned one above the other near the lower open end of said container, combshaped locking pins carried bythe upper pair of rails and means for periodically opening and closing said locking pins so as to control the egress of locking members from said container.

2. An automatic machine for conducting separable fasteners to a stringer comprising a feed channel adapted to be filled with separable fasteners, closing means at the lower end of said feed channel, a pair of rails adapted to operate on the fasteners to force them toward the stringer, said rails being movably mounted to permit separation thereof to allow passage of said fastenc rs from said feed channel through said closing meanswhen the latter is in open condition, and means for actuating said closing means and rails so as to supply fasteners successively from said feed channel past said rails to the stringer for said separable fasteners.

3. An apparatus for placing separable fasteners upon a stringer, comprising a plurality of containers for separable fasteners having spread out arms, said containers being spaced from one another substantially the same distance as the separable containers will be spaced when fastened to a stringer, a pair of bars located below the lower end of said containers to release the lowermost fasteners in each of said containers so as to position said separable fasteners as a row upon a stringer, and a second pair of reciprocating bars positioned below said first pair of bars for pressing the spread out arms of said separable fasteners upon a stringer.

4. Apparatus for use in assembling on a carrier member separable fastener elements of the type having spaced shanks having, in combination, a holder for the carrier member, a row of channel-like reservoirs for stacks of said fastener elements adapted to deliver the fastener elements with their shanks in straddling relation to the edge of the carrier member in said holder, and means between said holder and the ends of said reservoirs comprising elements movable toward and away from each other for releasing simultaneously a row of fastener elements for presentation to said edge of the carrier member.

5. Apparatus for use in asembling on a carrier member separable fastener elements of the type having spaced shanks having, in combination, a holder for the carrier member, a row of channel-like reservoirs for stacks of said fastener elements adapted to deliver the fastener elements with their shanks in straddling relation to the edge of the carrier member in said holder, and means between said holder and the ends of said reservoirs comprising elements'movable toward and away from each other for releasing simultaneously a row of fastener elements for presentation to said edge of the carrier member, said means being movable toward saidholder for forcing the released row of fastener elements onto said edge.

6. An automatic machine as set forth in claim 2 said actuating means last mentioned in claim 2 comprising a part mounted for rotary motion and longitudinal reciprocatory motion, one of said motions of said part spreading said rails and the other motion thereof moving said rails toward said stringer for forcingthe fasteners onto said stringer.

7. An automatic machine as set forth in claim 2 said actuating means last mentioned in claim 2 comprising a part mounted for rotary motion and longitudinal reciprocatory motion, one of said motions of said part spreading said rails and the other motion thereof moving said rails toward said stringer for forcing the fasteners onto said stringer, and. means for imparting said motions to said part comprising a lever pivoted on said part transversely to the axis of rotation thereof, anda fulcrum member for said lever mounted for rotation about an axis transverse to the axis of rotation of said part.

8. An automatic machine as set forth in claim 2 said actuating means last mentioned in claim 2 comprising a part mounted for rotary motion and longitudinal reciprocatory motion, one of said motions of said part spreading said rails and the other motion thereof moving said rails toward said stringer for forcing the fasteners toward said stringer, and means for imparting said motions to said part comprising a lever pivoted at a point intermediate its length to said part for swinging motion about an axis transverse to the axis of rotation of said part, a fulcrum member for said lever mounted for rotation about an axis transverse to the axis of rotation of said part and for reciprocation in the direction of its own axis, and operating means for said lever for swinging it to reciprocate said fulcrum member and swinging it to rotate said fulcrum member whereby said part is rotated and reciprocated respectively.

9. In an apparatus for mounting on a carrier member separable fastener elements of the type having spaced mounting shanks, the combination of a. holder for supporting the carrier member at the mounting position, and means including spaced fastener element reservoirs with facilities for guiding and delivering elements simultaneously from the reservoirs in successive rows to the mounting position, said holder being arranged to present the carrier member edgewisetoward the row of fastener elements as the latter are delivered from said means, and said means being arranged to deliver the fastener elements with the shanks of each element in a plane transverse to the edge of the carrier on the holder and at opposite sides respectively of the plane of the carrier so that the shanks of each element straddle the edge of .the carrier member.

10. In an apparatus for mounting on a carrier member separable fastener elements of the type having spaced mounting shanks, the combination of a holder for supporting the carrier member at the mounting position, and means including spaced fastener element reservoirs with facilities for guiding and delivering elements simultaneously from the reservoirs in successive rows to the mounting position, said holder being arranged to present the carrier member edgewise toward the row of fastener elements as they are delivered from said means and having corresponding spaced recesses at opposite sides of the carrier member position for spacing the fastener elements on the carrier, and said means being arranged to deliver the fastener elements with the shanks of each element in a plane transverse to the edge of the carrier on the holder and at opposite sides respectively of the plane ofthe carrier so that the shanks of each element enter said recesses of the holder and straddle the edge of the carrier member.

11. Inan apparatus for mounting on a carrier vmember separable fastener elements of the type having spaced mounting shanks, the combination of a holder for supporting the carrier member at the mounting position, and means including spaced channel like fastener element reservoirs with facilities for guiding and delivering elements simultaneously from the reservoirs in successive rows to the mounting position, said holder being arranged to present the carrier member edgewise toward the row of fastener elements as they are delivered from said means,

said means being arranged to deliver the fastener elements with the shanks of each element in a plane transverse to the edge of the carrier on the holder and at opposite sides respectively of the plane of the carrier so that the shanks ,of each element straddle the edge of the carrier member, and said holder having corresponding recesses at opposite sides of the carrier position serving as guide ways for the reception of the shanksof the fastener elements.

12. In an apparatus for mounting on a carrier member separable fastener elements of the type having spaced mounting shanks at one end and a lateral projection at the other end, the combination of a holder for supporting, the carrier member at the mounting position, and means including spaced channel-like fastener element reservoirs with facilities for guiding and delivering elements simultaneously from the reservoirs in successive rows to the mounting position, said holder being arranged to present the carrier member edgewise toward the row of fastener elements as the latter are delivered from said means and having corresponding notches at opposite sides of the carrier member position, said means being arranged to deliver the fastener elements with the shanks of each element in a plane transverse to the edge of the carrier on the holder and at opposite sides respectively of the plane of the carrier so that the shanks of each element straddle the edge of the carrier member, and said facilities including means with which the lateral projections of the fastener elements co-operate to maintain the successive elements of each channel-like reservoir in alignment. I p

13. In an apparatus for assembling on a carrier member separable fastener elements of the type having spaced shanks, the combination of a holder for the carrier member," means for simultaneously feeding a plurality of spaced rows of fastener elements and successively applying the end elements of the rows-in a group to the carrier member on the holder, said holder 1 being arranged to present the carrier member edgewise toward the group of fastener elements and said means being arranged to deliver the fastener elements of each group so that the shanks of each element straddle the edge of the 1 carrier member on the holder.

14. In an apparatus for assembling on a carrier member separable fastener elements of the type having spaced shanks, the, combination of a holder for the carrier member, means for 1 simultaneously feeding a plurality of spaced rows of fastener elements and successively applying the -end elements of the rows in a group to the carrier member on the holder and means for forcing each group of fastener'elements onto 1 the edge of the carrier member, said holder being arranged to present the carrier member edgewise toward the group of fastener elements and said first-mentioned means being arranged to deliver the fastener elements of each group 1 so that-the shanks of each element straddle the edge of the carrier member on the holder.

15. In an apparatus for assembling on a carrier member separable fastener elements of the type having spaced shanks, the combination of 1 a holder for the carrier member, means for si-.

'multaneously feeding a plurality of spaced rows of fastener elements and successively applying the end elements of the rows in a group to the carrier member on the holder, said holder being 1 arranged to present the carrier member edgewise toward the group of fastener elements and said means'being arranged to deliver the fastener elements of each group so that the shanks of each element straddle the edge of the carrier 1 member on the holder and guiding means at opposite sides of the plane of the carrier member when the latter is in the holder, which said guiding means co-operates with the shanks of the elements to space the latter on the edge of 1 the carrier member. I

16. In an apparatus for assembling on a car rier member separable fastener elements of the type having spaced shanks, the combination of a holder for the carrier member, means for de- 1 Iivering a row of fastener elements to the carrier member, said holder being positioned to present the carrier member edgewise toward the delivered row of fastener elements so that the shanks of said elements straddle the edge of the carrier member, and means at opposite sides of the carrier member with which the shanks of the elements engage and by which the elements are spaced along the edge of the carrier member.

17. In an apparatus for assembling on a carrier member separable fastener elements of the type having spaced shanks, the combination of a holder for the carrier member having fastener element spacing means associated therewith, and means for delivering a row of fastener elements to the carrier member, said holder being positioned to present the carrier member edge'-.

wise toward the delivered row of fastener elements and in a plane midway between the shanks of the elements so that the shanks of said elements straddle the edge of the carrier member.

18. In an apparatus for assembling on a carrier member separable fastener elements of the type having spaced shanks, the combination of a holder for the carrier member having a comblike fastener element spacing means associated therewith, and means for delivering a row of fastener elements to the carrier member, said holder being positioned to present the carrier member edgewise toward the delivered row of fastener elements and in a plane midway between the shanks of the elements so that the shanks of said elements straddle the edge of the carrier member with the shanks of the several fastener elements entering between the teeth of the comb.

19. In an apparatus for assembling on a carrier member separable fastener elements of the type having spaced shanks, the combination of a holder for the carrier member, and means for delivering a row of fastener elements to the carrier member, said holder being positioned to present the carrier member edgewise toward the delivered row of fastener elements and in a plane midway between the shanks of the elements so that the shanks of said elements straddle the edge of the carrier member and means for forcing the fastener elements of the row simultaneously onto said edge when the elements are so delivered.

20. In an apparatus for mounting on a carrier member separable fastener elements of the type having spaced mounting shanks, the combination of a holder for supporting the carrier member at the mounting position, means forming spaced channel-like reservoirs for a plurality of stacks of said fastener elements, said holder being arranged to present the carrier member-edgewise toward the row of fastener elements as they are delivered from said means and having means associated therewith providing spaced members for spacing said fastener elements on the carrier, and co-ordinated means for simultaneously releasing one fastener element from each stack of elements for'delivering a row of said elements in straddling relation to the edge of the carrier member and for forcing said elements onto said edge with said shanks in the interstices of said spaced members.

21. In the manufacture of slider operated fasteners, the method of mounting a series of fastener elements on the enlarged edge of a stringer in suitable spaced relation to enter between and interlock with an opposed series of correspondingly spaced fastener elements, which said method comprises supplying open jawed fastener elements to the'r'nounting position in rows so that the foremost'elements of the rows are in the spaced relation they are to occupy on the stringer; applying clamping pressure against opposite sides of j the enlarged edge of the stringer at longitudinally spaced places corresponding to the spaces between said foremost fastener elements so as to support the said enlarged edge and leave portions thereof exposed between said places; then, by a relative movement of the enlarged edge and said foremost fastener elements inserting the exposed portions of said stringer edge simultaneously in the openings between the jaws of the foremost fastenerelements; and thereafter clamping the jaws of said foremost fastener elements against the opposite sides of said stringer edge.

22. In the manufacture of slider operated fasteners, the method of mounting a series of fastener elements on the enlarged edge of a stringer in suitable spaced relation to enterbetween and interlock with an opposed series of correspondingly spaced fastener elements, which said method comprises supplying open jawed fastener elements to the mounting position in rows so that the foremost elements of the rows are in the spaced relation they are to occupy on the stringer; holding the enlarged edge of the stringer at longitudinally spaced places corresponding to the spaces between said foremost:

of the enlarged edge between said places where' the enlarged edge is held.

23. In the manufacture of slider operated fasteners, the method of mounting a series of fastener elements on the enlarged edge of a stringer in suitable spaced relation to enter between and interlock with an opposed series of correspondingly spaced fastener elements, which said method comprises supplying to the mounting position flat openjawed fastener elements in rows so that the foremost elements of the rows are in the spaced parallel side to side relation they are to occupy on the stringer and have their jaw openings foremost and in alignment; clamping the enlarged edge of the stringer between holding members with opposed series of notches which expose the opposite sides of said stringer edge at spaced places corresponding to said foremost fastener elements; and then inserting the jaws of the foremost fastener elements of the rows in the corresponding notches of the holding members and against the opposite exposed sides of the stringer edge.

24. In the manufacture of slider operated fasteners, the method of mounting a series of fastener elements on the enlarged edge of a stringer in suitable spaced relation to enter between and interlock with an opposed series of correspondingly spaced fastener elements, which said method comprises supplying open jawed fastener elements to the mounting position in rows so that the foremost elements of the rows are in the spaced relation they are to occupy on the stringer, and with their jaw openings in alignment; locating stringers with enlarged edges successively at the mounting position so that the enlarged edges thereof extend along in front of the jaw openings of the foremost ele-' .ments of the rows with opposite sides of the stringer edge exposedin front of the jaw opening of each of said foremost elements; and successively removing each succeeding group of foremost elements of the rows and applying the groups ofelements successively on the enlarged edges of the successive stringers so that the jaws of the elements straddle the enlarged edges of the stringers.

25. In the manufacture of slider operated fasteners, the method of mounting a series of fastener elements on the enlarged edge of a stringer in suitable spaced relation to enter between and interlock with an opposed series of correspondingly spaced fastener elements, which said method comprises providing a supply of elongated flat fastener elements each having a lateral projection at one end and a pair of di-; 

